.diddy-card {
  max-width: 500px;
  margin: 30px auto;
  padding: 22px;
  border-radius: 18px;
  background: linear-gradient(135deg, #ffffff, #f7f7f7);
  box-shadow: 0 15px 40px rgba(0,0,0,0.1);
  font-family: system-ui, sans-serif;
  text-align: center;
  border: 2px solid #ddd;
}

.diddy-card h1 {
  font-size: 24px;
  margin-bottom: 10px;
}

.diddy-card label {
  font-size: 16px;
  margin-top: 12px;
}

.diddy-card select,
.diddy-card input,
.diddy-card button {
  width: 100%;
  padding: 12px;
  margin-top: 12px;
  border-radius: 12px;
  border: 1px solid #ddd;
}

.diddy-card button {
  background: #000;
  color: #fff;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.3s;
}

.diddy-card button:hover {
  background: #444;
}

#diddy-result {
  margin-top: 20px;
  padding: 18px;
  background: #fff;
  border-radius: 12px;
  font-size: 18px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.diddy-card input[type="text"] {
  font-size: 16px;
}